The precedence in it ACTUALLY involves photography, where a monkey took a picture after someone had left a camera by a group of monkeys. A picture taken by a human would be copyrightable, the picture taken by the monkey, not so.
Consider it this way. IF you are putting the same amount of effort you would put in that you would put in to commission a human artist to make work for you, then it's not yours.
If you are putting in as much effort as you would make to fully collaborate with another human, then it's yours.
What this basically does is say that corporations and people can't use AI to commission art or work-for-hire and have it copyrighted. It explicitly says that if a human uses AI as a tool they can still copyright.